Water-meter



2 Sheets-Sheet 1.

(No Model.)

L. H. NASH.

WATER METER. No. 548,586.

Patented Oct. 22, 1895.

ANDREW EGRANAMJNOTOWQWASHINETUN.DC.

-(No Model.) 2 Sheets-Sheet 2.

' L. H. NASH. WATER METER.

No. 548,586. Patented Oct. 22, 1895.

WITNESSES:

ANDREW BJERAMM.PNOTO-UTKD.WA$NINGTUNJL' UNITED STATES PATENT Orrics.

WATER-M ETER.

SPECIFICATION forming part of Letters Patent No.

548,586, dated October 22, 1895.

Application filed December 6, 1893. Serial No. 492,906- (No model.)

To all whom it may concern.-

Be it known that I, Lnwrs HALLOCK lines, a citizen of the United States,residing at South Norwalk, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements in WaterMeters, of which the following is a specification.

My present invention relates to nutatingpiston water-meter; and itconsists of certain novel parts and combination of parts particularlypointed out in the claims concluding this specification.

Referring to the accompanying drawings, Figure 1 is a vertical sectionon the line '1 1, Fig. 2,through a meter embodying my present invention.Fig. 2 is a top view of the measuring-chamber, the upper head-plate ofthe case being removed. Fig. 3 is an elevation of the piston, viewedfrom the side; and Fig. 4 is an elevation of the measuring-chamber.

The following is a description of the structure shown in the drawings.

A is the inlet-spud, and B the outlet-spud.

G is the upper head-plate of the case, and D the lower head-plate.

E E is the measuringchamber, divided by two partitions H and H intothree separate chambers. The piston is provided with a flat disk J andtwo conical disks J and J". The disk J operates in the intermediatechamber F, the disk J in the upper chamber F, and the disk J" in thelower measuring-chamber F".

K,K, and K are diaphragms for the chambers F, F, and F", respectively.In this case these diaphragms are made of one piece, and are thereforeall arranged on the same side of the several chambers, although in someaspects of my invention it is not necessary that they should be soarranged. All three of the pistons are split in the ordinary way tostraddle their respective diaphragms, as shown in Fig. 3.

L, L, and L are all inlet-ports.

M, M, and M,,Fig. 4, are the outlet-ports.

T is a pin projecting from the piston, making connection with thespindle of the registering mechanism. The partitions H and H arepreferably cut away in the region of the abutment, forming slots Q Q,Fig. 2, by means of which the chambers F, F, and F communicate toequalize pressures.

The ball-bearing is inade of four parts R R and S S, between which partsthe disks are secured.

The operation is as follows: Water is admitted through the spud A byinlet-passages L, L, and L" into the three chambers or sections of themeasuring-chambers, and being metered passes out through theoutlet-ports M, M, and M to the spud B.

In an application filed by me on even date herewith, bearing Serial N 0.492,905, I have shown a nutating-piston meter provided with two disksoperating in corresponding measuring-chambers.

Concerning the structure shown and described here, it may be, amongother things, remarked that a given displacing action is obtained with apiston having more than two disks with less angular motion than with apiston having only two disks, irrespective of other features ofconstruction. By arranging all the diaphragms on the same side and byestablishing communication between the several chambers I obtain a freerinlet and outlet for the water and provide means for equalizing thepressures in all the chambers. This latter feature is not, however,dependent upon the presence of three chambers, but is equally applicableto a meter in which there are only two chambers, such as the metersdescribed in my said application.

Referring to Fig. 3, it will be seen that the slots in the disks J andJ' are much broader than is the slot in the disk J. The broad slots inthe disks J and J 2 establish communication between the chambers onopposite sides of these pistons and functional parts, while the narrowslot in the piston J furnishes a guide-bearing for the piston on thesides of the diaphragm to prevent rotation. Considering a piston soformed in connection with the case shown in Fig. 1 of the drawings, inwhich the several chambers are in direct communication in the region oftheir diaphragms, it will be seen that communication between all thechambers is established, by reason whereof the pressures present in eachare still further equalized.

In the foregoin g specification 1 have referred to some of themodifications which might be employed in practicing my invention, but Ihave not endeavored to specify all the modifications which might beemployed in the practice of my invention, the object of thisspecification being to instruct persons skilled in the art to which myinvention relates to make and use the same in the form at presentpreferred by me; and it will be understood that mention by me of somemodifications is not in any way intended to exclude others not referredto, but which are within the spirit and scope of my invention.

In the claims the omission of an element or the omission of reference tothe detailed features of the elements mentioned is intended to be aformal declaration of thefact that the omitted elements or features arenot essential to the inventions therein severally covered.

I claim 1. In a nutating piston water meter,- the combination of apiston provided with a plurality of disks, conical and fiat, and aplurality of chambers in which said disks operate.

2. In a nutating piston water meter, the combination of a pistonprovided with a Hat disk and with a plurality of conicaldisks of aplurality of chambersin which said disks operate 3. In a nutating pistonwater meter, the combination with a piston having a plurality of disksand a measuring chamber composed of a plurality of separate chamberscommunieating with each other.

4. In a nutating piston water meter, the combination with a pistonhaving a plurality of disks and a measuring chamber composed of aplurality of separate chambers, of diaphragins for the several chambersarranged on one side thereof, said chambers communicating with eachother.

5. In a nutating piston water meter, the combination with a pistonhaving a plurality of disks one of which constitutes a guide-bearing onthe diaphragm and another of which is provided with a port in the regionof the diaphragm.

6. In a mutating piston water meter, the combination of a plurality ofdisks and a measuring chamber,composed of a plurality of separatechambers in communication with each other-by an opening or openingsbetween said chambers and through the piston.

LEWIS I-IALLOCK NASH.

W'it-nesses:

M. WILsoN, J. EDGAR BULL.

